EP0294281B1 - System zum Halten von Tochtergeschossen in einem sich um seine Längsachse drehenden Geschoss - Google Patents

System zum Halten von Tochtergeschossen in einem sich um seine Längsachse drehenden Geschoss Download PDF

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Publication number
EP0294281B1
EP0294281B1 EP88401314A EP88401314A EP0294281B1 EP 0294281 B1 EP0294281 B1 EP 0294281B1 EP 88401314 A EP88401314 A EP 88401314A EP 88401314 A EP88401314 A EP 88401314A EP 0294281 B1 EP0294281 B1 EP 0294281B1
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EP
European Patent Office
Prior art keywords
stage
tabs
parts
release
tab
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88401314A
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English (en)
French (fr)
Other versions
EP0294281A1 (de
Inventor
Jean-Pierre Frehaut
Eric Magnaudet
Jean-Pierre Pineau
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Thomson Brandt Armements SA
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Thomson Brandt Armements SA
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Publication of EP0294281A1 publication Critical patent/EP0294281A1/de
Application granted granted Critical
Publication of EP0294281B1 publication Critical patent/EP0294281B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
    • F42B12/56—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing discrete solid bodies
    • F42B12/58—Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles
    • F42B12/62—Cluster or cargo ammunition, i.e. projectiles containing one or more submissiles the submissiles being ejected parallel to the longitudinal axis of the projectile
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
    • F42B14/06—Sub-calibre projectiles having sabots; Sabots therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
    • F42B14/06—Sub-calibre projectiles having sabots; Sabots therefor
    • F42B14/065—Sabots carrying several projectiles

Definitions

  • the invention relates to loads composed of multiple and / or heterogeneous charges such as submunitions, loaded on a projectile rotating around its longitudinal axis. These loads having to be dropped during the trajectory, their arrangement inside the projectile is provided to separate the components at the time of their release.
  • the invention is more particularly adapted to solve problems concerning the projectiles constituted by mortar shells, the rotational speed of which is very high (more than 10,000 revolutions per minute).
  • each submunition has a support element, consisting of two spacers 2A and 2B, separable at the time of the release to release the submunition. These two spacers have at their rear a reinforcement 3A and 3B to support the submunition upon departure.
  • the inertia forces at the start of the shot, due to each submunition are only supported by their two respective spacers. Each spacer is in contact with the next. The forces thus accumulated are transmitted to the bottom 4 of the projectile.
  • FIG. 2 One of the drawbacks of this type of mounting is illustrated in FIG. 2. On this, the same elements have been shown as those shown in FIG. 1, but during the release. The ejection is done by the rear of the casing 5 of the projectile, along the longitudinal axis XX ′, the bottom 4 coming off first. Next follow, the last two spacers 2A and 2B supporting the ammunition 6. It can be seen that the rear parts 3A and 3B of the last two spacers are subjected to centrifugal force due to the high speed of rotation of the entire projectile, of the submunitions and their spacers.
  • the object of the invention is to remedy these drawbacks by creating a new system for maintaining the load inside the projectile while allowing it to be released easily.
  • the invention is a load holding system composed of multiple and / or heterogeneous charges loaded on a projectile rotating around its longitudinal axis and released during the trajectory by one end thereof, said load comprising at at least one stage comprising side by side at least two distinct parts which must be separated at the time of the release, the projectile comprising an envelope inside which said loading is placed, the system being characterized in that it comprises for each stage of the fixing means intended to maintain in a compact assembly the distinct parts of said stage, so as not to cause against the envelope significant radial stresses under the effect of the centrifugal force resulting from the rotation of the projectile, these fixing means consisting of U-shaped profiles called jumpers, placed on the periphery of each stage and having at least two fixing lugs, each of these lugs entering in a corresponding peripheral recess of one of said separate parts, the mechanical strength and the exact shape of said jumpers being provided so that they hold the parts of the same stage before release, and that they retract at the moment of the drop.
  • the principle of the system according to the invention is based on the fact that the different parts of a stage of a stack, in this case the spacers 6 and their submunitions 7, must constitute a compact stage before dropping so as not to cause significant radial stresses against the envelope 5 due to the centrifugal force created by the projectile rotating around its longitudinal axis.
  • Fastening means 8 must be provided, and also be retractable at the time of the release so that these different parts can move laterally and freely, due to the centrifugal force.
  • these fixing means consists in using U-shaped profiles called, in the following description, "jumpers". These parts are rigid enough to hold the different parts of the same floor, and are placed on the periphery of the assembly. Referring to Figure 4, these jumpers have in their cross section, two legs 9, each sinking into a corresponding notch of one of the parts 6 to be maintained assemblies. These tabs are connected by a central part 10 of smaller thickness.
  • the shape of the rider's legs is such that, under the influence of the centrifugal force, its components and the friction forces thus generated, all the riders and the parts linked by these riders remain naturally united. This can be done for example by forming a slight dovetail.
  • the jumpers are each associated with ejection means.
  • the latter are constituted, to operate under the effect of simple centrifugal force, counterweight 12, whose mass subjected to centrifugal force, allows the uprooting of a jumper. Furthermore, this mass should not be too large so that the centrifugal force, which is applied to it, does not cause the annoying friction against the casing 5, mentioned in connection with the devices according to known techniques.
  • Each flyweight is associated with a rider. In FIG. 4, no fixing means between the rider and the counterweight has been drawn, the counterweight 12 being able to form an integral part of the rider 10. Fixing means can however be envisaged between these two parts, for example, means fixing by pins or screws placed parallel to the axis of the casing 5.
  • this counterweight 12 is the last part of the jumper to come out of the envelope 5 (see FIG. 5).
  • the flyweight drives the rider after an inward race.
  • the counterweight 30 has an annular groove 31, deep enough to allow a re-entrant annular part 32 of the jumper 33 to penetrate therein over several millimeters while not filling a radial space E.
  • the side 34 of the groove 31 placed between it and the rider has a reduced diameter to allow a translational movement of the counterweight 30 towards the outside, authorized by the presence of the space E.
  • the counterweight is released from the envelope, it deviates towards the outside as previously.
  • the jumper must be completely removed so that it can be ejected from the parts 6 to be separated. This therefore prevents the bracing of any part during its exit from the envelope.
  • the separation of the parts, after the uprooting of all the jumpers, is carried out thanks to the centrifugal force which applies to each of the parts 6.
  • the application of the system according to the invention to a projectile containing the submunitions is as follows.
  • the counterweights are of a thickness greater than that of the corresponding jumper 20, but also that these weights extend over a maximum peripheral sector, forming a continuous circular ring, so as to touch each other. This has the effect of considerably increasing the mass of these weights. By this fact, they can also provide support for the corresponding munition 6.
  • the spacers 18 only position the submunitions coaxially. As shown in FIG.
  • the counterweight 21 no longer fulfills the function of hooking the spacers 18, and is therefore subjected to centrifugal force without being maintained by the ammunition 6, this so as to entail, during the release, the remainder of the rider 20.
  • the ammunition in this example was drawn in two parts of different diameter, and resting on the weights, approximately in the middle of the length of each ammunition. This is a exemplary embodiment, each munition being able to be supported either by the counterweight, or by the spacer, at one end of this ammunition as well as in its center.
  • the spacers do not separate until after their complete extraction, and avoid jamming stresses by progressive angular separation during extraction, as illustrated in FIG. 5.
  • FIGS. 8 and 9 can allow asymmetrical locking and release, so as to make variable lateral ejections of the different parts.
  • the system easily allows the entire load placed inside the envelope to be rotated, by providing interconnection between each spacer.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Toys (AREA)

Claims (11)

1. System zum Halten einer Ladung bestehend aus Vielfachladungen, das auf einem um seine Längsachse (X-X′) drehenden Geschoß getragen und während des Flugs über ein Geschoßende ausgestoßen wird, wobei die Ladung mindestens eine Stufe mit nebeneinander mindestens zwei getrennten Teilen aufweist, die während des Ausstoßens getrennt werden sollen und wobei das Geschoß eine Hülle (5) aufweist, in der die Ladung angeordnet ist, dadurch gekennzeichnet, daß das System für jede Stufe Befestigungsmittel (8, 12, 20, 21, 28) aufweist, die dazu bestimmt sind, die verschiedenen Teile der Stufe in einer kompakten Einheit zusammenzuhalten, um nicht aufgrund der durch die Drehung des Geschoßes bewirkten Zentrifugalkräfte größere Radialkräfte auf die Hülle (5) auszuüben, wobei die Befestigungsmittel aus Profilteilen in U-Form, Reiter genannt (8, 33), bestehen, die am Rand jeder Stufe angeordnet sind und mindestens zwei Befestigungsfüße aufweisen, wobei jeder dieser Füße in eine periphere entsprechende Vertiefung eines der beiden getrennten Teile eindringt und wobei der mechanische Widerstand und die exakte Form dieser Reiter so gewählt sind, daß sie die Teile einer jeweiligen Stufe vor dem Ausstoßen festhalten und daß sie sich im Moment des Ausstoßens lösen.
2. System nach Anspruch 1, dadurch gekennzeichnet, daß es Mittel zum Ausstoßen der Reiter (12, 21, 30) aufweist, die vor dem Ausstoßen durch die Hülle (5) festgehalten werden und beim Ausstoßen aufgrund der Zentrifugalkraft entfernt werden, so daß sie die Reiter von den Teilen (6, 8) lösen, an denen sie befestigt sind.
3. System nach Anspruch 2, dadurch gekennzeichnet, daß die Mittel zum Ausstoßen der Reiter für jeden Reiter aus einem Kopf (12, 21) bestehen, der starr an einem Ende des entsprechenden Reiters befestigt ist, so daß er nach dem ihm zugeordneten Reiter aus der Hülle entfernt wird, um ihn dann der Zentrifugalkraft aufgrund seiner Masse auszusetzen und von den Teilen (6, 18) zu trennen, die er vor dem Ausstoßen festhält.
4. System nach Anspruch 2, dadurch gekennzeichnet, daß die Mittel zum Ausstoßen der Reiter (8) für jeden Reiter aus einem Kopf (30) bestehen, der an dem Reiter (32, 33) nach einem Verschiebungsweg nach außen anschlägt, so daß er nach dem ihm entsprechenden Reiter aus der Hülle (5) entfernt wird, auf seinem Weg nach außen aufgrund der Drehung kinetische Energie speichert und den Reiter somit von den Teilen entfernt, die er vor dem Ausstoßen festhält.
5. System nach einem beliebigen der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Befestigungsfüße (9) der Reiter (8, 20, 23) so ausgebildet sind, daß die Zentrifugalkraft, die auf die Reiter einwirkt, durch die Reibungskräfte in der mechanischen Kopplung zwischen diesen Füßen (9) und den von ihnen festgehaltenen Teilen (6, 18) kompensiert wird.
6. System nach einem beliebigen der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß jede Stufe aus einer zentralen Submunition (7), die koaxial entlang der Geschoßachse (X-X′) angeordnet ist, und aus mehreren Zwischenstücken (18) besteht, die die Munition umgeben und durch die Reiter (20) gehalten werden.
7. System nach Anspruch 6, dadurch gekennzeichnet, daß in jeder Stufe die Submunition (7) nur teilweise über ihre Länge von den Zwischenstücken (18) ihrer entsprechenden Stufe, und dafür teilweise von den Zwischenstücken der benachbarten Stufe umgeben ist.
8. System nach Anspruch 3, dadurch gekennzeichnet, daß die Köpfe (21) der Reiter (20) so geformt sind, daß sie einen durchgehenden kreisförmigen Ring bilden.
9. System nach einem beliebigen der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Teile (16), die die Stufe bilden, bündelförmig im Inneren der Hülle (5) angeordnet sind.
10. System nach einem beliebigen der Ansprüche 1 bis 5 und nach Anspruch 8, dadurch gekennzeichnet, daß die Köpfe (21) den Anschlag für die Submunition bilden.
11. System nach Anspruch 10, dadurch gekennzeichnet, daß für die letzte Submunition der querschnitt des Kopfes (21), gegen den sich die Submunition abstützt, eine Verlängerung auf das benachbarte Zwischenstück und auf das Unterteil findet, wodurch die Kräfte während des Beginns des Ausstoßens verringert werden können.
EP88401314A 1987-06-02 1988-05-31 System zum Halten von Tochtergeschossen in einem sich um seine Längsachse drehenden Geschoss Expired - Lifetime EP0294281B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8707708A FR2616217B1 (fr) 1987-06-02 1987-06-02 Systeme de maintien de charges multiples embarquees dans un projectile tournant autour de son axe longitudinal
FR8707708 1987-06-02

Publications (2)

Publication Number Publication Date
EP0294281A1 EP0294281A1 (de) 1988-12-07
EP0294281B1 true EP0294281B1 (de) 1992-01-29

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EP88401314A Expired - Lifetime EP0294281B1 (de) 1987-06-02 1988-05-31 System zum Halten von Tochtergeschossen in einem sich um seine Längsachse drehenden Geschoss

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US (1) US4920887A (de)
EP (1) EP0294281B1 (de)
DE (1) DE3868144D1 (de)
FR (1) FR2616217B1 (de)

Families Citing this family (16)

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Publication number Priority date Publication date Assignee Title
FR2684754B1 (fr) * 1991-12-10 1995-04-07 Thomson Brandt Armements Obus dont le culot fait office de pot de parachute d'une sous-munition.
SE503719C2 (sv) * 1992-06-30 1996-08-12 Bofors Ab Sätt och anordning för separation av substridsdelar
DE4429292C2 (de) * 1994-08-18 1998-04-09 Rheinmetall Ind Ag Drallstabilisiertes Trägergeschoß
KR100549487B1 (ko) * 1997-12-11 2006-02-08 록히드 마틴 코포레이션 장갑형 투하 폭탄
US6408762B1 (en) 1997-12-11 2002-06-25 Lockheed Martin Corporation Clamp assembly for shrouded aerial bomb
US6389977B1 (en) 1997-12-11 2002-05-21 Lockheed Martin Corporation Shrouded aerial bomb
RU2138007C1 (ru) * 1998-09-07 1999-09-20 Государственное научно-производственное предприятие "Сплав" Кассетная головная часть
USD438930S1 (en) 2000-02-09 2001-03-13 Lockheed Martin Shrouded aerial bomb
US6374744B1 (en) 2000-05-25 2002-04-23 Lockheed Martin Corporation Shrouded bomb
US6874425B1 (en) 2001-05-18 2005-04-05 Day & Zimmermann, Inc. Projectile carrying sub-munitions
US6640723B2 (en) * 2002-03-25 2003-11-04 The United States Of America As Represented By The Secretary Of The Navy Mission responsive ordnance
US6619210B1 (en) * 2002-03-25 2003-09-16 The United States Of America As Represented By The Secretary Of The Navy Explosively formed penetrator (EFP) and fragmenting warhead
US6857371B1 (en) * 2003-06-19 2005-02-22 The United States Of America As Represented By The Secretary Of The Navy Two-payload decoy device
SE540399C2 (sv) 2016-04-20 2018-09-11 Bae Systems Bofors Ab Stödanordning för delningsbar fallskärmsgranat
RU2681042C1 (ru) * 2018-03-26 2019-03-01 Акционерное общество "Конструкторское бюро приборостроения им. академика А.Г. Шипунова" Отделяющееся ведущее устройство подкалиберного реактивного снаряда
US10443993B1 (en) * 2018-11-29 2019-10-15 The United States Of America As Represented By The Secretary Of The Army Spin discarding multiple projectile sabot

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US3016011A (en) * 1956-07-11 1962-01-09 Brown Fred Cluster opening method
US2970542A (en) * 1956-07-13 1961-02-07 George L Pigman Bomb release device
US3088404A (en) * 1956-11-15 1963-05-07 Brown Fred Interlocking screw threads
US3834312A (en) * 1973-03-14 1974-09-10 Bofors Ab Parachute-borne flare assemblage
US4389940A (en) * 1976-04-02 1983-06-28 Raytheon Company Antipersonnel mine
DE3139473C2 (de) * 1981-10-03 1984-03-01 Diehl GmbH & Co, 8500 Nürnberg Vorrichtung zum Zusammenfassen von zylindrischer Abwurfmunition in Bündeln
FR2547910B1 (fr) * 1983-06-27 1987-01-23 Lacroix E Tous Artifices Projectile pour dispersion de munitions
DE3506889A1 (de) * 1985-02-27 1986-08-28 Dynamit Nobel Ag, 5210 Troisdorf Flugkoerper
US4638737A (en) * 1985-06-28 1987-01-27 The United States Of America As Represented By The Secretary Of The Army Multi-warhead, anti-armor missile
US4714020A (en) * 1987-01-30 1987-12-22 Honeywell Inc. Enabling device for a gas generator of a forced dispersion munitions dispenser

Also Published As

Publication number Publication date
FR2616217B1 (fr) 1993-02-05
DE3868144D1 (de) 1992-03-12
FR2616217A1 (fr) 1988-12-09
US4920887A (en) 1990-05-01
EP0294281A1 (de) 1988-12-07

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